Apply consistent code formatting across the repo. Add clang-format and pre-commit hooks.

Author: rwarmstr

.clang-format

@@ -0,0 +1,49 @@
+---
+AccessModifierOffset: -4
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: Consecutive
+AlignConsecutiveDeclarations: Consecutive
+AlignConsecutiveMacros: Consecutive
+AlignEscapedNewlines: Left
+AlignOperands: AlignAfterOperator
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: false
+BinPackArguments: false
+BinPackParameters: false
+BraceWrapping:
+    AfterClass: true
+    AfterControlStatement: false
+    AfterExternBlock: true
+    AfterFunction: true
+    AfterStruct: true
+    AfterUnion: true
+    BeforeCatch: true
+    BeforeElse: true
+    IndentBraces: false
+BreakBeforeBraces: Custom
+BreakBeforeConceptDeclarations: true
+BreakBeforeBinaryOperators: NonAssignment
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeComma
+BreakInheritanceList: BeforeComma
+ColumnLimit: 120
+DerivePointerAlignment: false
+FixNamespaceComments: true
+IncludeCategories:
+  - Regex:           '^<.*>'
+    Priority:        1
+  - Regex:           '^".*"'
+    Priority:        2
+SortIncludes: true
+IncludeBlocks: Regroup
+IndentWidth: 4
+MaxEmptyLinesToKeep: 2
+PointerAlignment: Right
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+Standard: c++17
+TabWidth: 4
+UseTab: Never
+...

.pre-commit-config.yaml

@@ -0,0 +1,100 @@
+# Copyright (c) 2024, NVIDIA CORPORATION.
+ci:
+    autofix_commit_msg: |
+      [pre-commit.ci] auto code formatting
+    autofix_prs: false
+    autoupdate_branch: ''
+    autoupdate_commit_msg: '[pre-commit.ci] pre-commit autoupdate'
+    autoupdate_schedule: quarterly
+    skip: []
+    submodules: false
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v5.0.0
+    hooks:
+      - id: end-of-file-fixer
+        exclude: |
+          (?x)^(
+            .*\.raw$|
+            .*\.bin$|
+            .*\.dat$|
+            .*\.nv12$|
+            data/.*|
+            Common/.*
+          )
+        files: |
+          (?x)^(
+            .*\.txt$|
+            .*\.md$|
+            .*\.cpp$|
+            .*\.cxx$|
+            .*\.hpp$|
+            .*\.h$|
+            .*\.cu$|
+            .*\.cuh$
+          )
+      - id: mixed-line-ending
+        exclude: |
+          (?x)^(
+            .*\.raw$|
+            .*\.bin$|
+            .*\.dat$|
+            .*\.nv12$|
+            data/.*|
+            Common/.*
+          )
+        files: |
+          (?x)^(
+            .*\.txt$|
+            .*\.md$|
+            .*\.cpp$|
+            .*\.cxx$|
+            .*\.hpp$|
+            .*\.h$|
+            .*\.cu$|
+            .*\.cuh$
+          )
+      - id: trailing-whitespace
+        exclude: |
+          (?x)^(
+            .*\.raw$|
+            .*\.bin$|
+            .*\.dat$|
+            .*\.nv12$|
+            data/.*|
+            Common/.*
+          )
+        files: |
+          (?x)^(
+            .*\.txt$|
+            .*\.md$|
+            .*\.cpp$|
+            .*\.cxx$|
+            .*\.hpp$|
+            .*\.h$|
+            .*\.cu$|
+            .*\.cuh$
+          )
+  - repo: https://github.com/pre-commit/mirrors-clang-format
+    rev: v19.1.6
+    hooks:
+      - id: clang-format
+        types_or: [file]
+        files: |
+          (?x)^(
+            ^.*\.c$|
+            ^.*\.cpp$|
+            ^.*\.cu$|
+            ^.*\.cuh$|
+            ^.*\.cxx$|
+            ^.*\.h$|
+            ^.*\.hpp$|
+            ^.*\.inl$|
+            ^.*\.mm$
+          )
+        exclude: |
+          (?x)^(
+            Common/.*
+          )
+        args: ["-fallback-style=none", "-style=file", "-i"]